Bag filling and handling mechanism



arch 24, 1936. A. G. \CARLSON I 2,034,972

' BAG FILLING AND HANDLING MECHANISM Filed Nov. 26, .1934 2 Sheets-Sheet1 fizz/6735f: ddooh G (a/160m, @WM M March A. G. CARLSON BAG FILLING ANDHANDLING MECHANISM Filed Nov. 26, 1954 2 Sheets-Sheet 2 t ddolphG W160iPatented Mar. :24, 1936 BAG FILLING AND HANDLING LIECHANI SM Adolph G.Carlson, Chicago, Ill. Application November 26,1934, Serial N6. 754,923

' 8 Claims.

The invention relates to bag filling mechanism and has reference moreparticularly to a machine for filling bags with cement or other ma--terials and which will automatically discharge the bag without attentionfrom the operator.

1 An object of the invention is to provide'apparatus for emcientlyfilling a bag\with finely divided materials such as cement without anyloss of the material and which will automatically remove the bag at theend of the filling operation In the drawings which illustrate anembodiment of the invention and wherein like reference 25 characters areused to designate like parts Figure 1 is a side elevational view, partsbe-' ing shown in section of the bag filling and handling mechanisni ofthe invention;

Figure 2 is a front elevational view of the ap- 39 paratus shown inFigure 1;

Figure 3 is a detail plan view of the bag hold er; and

Flgure'4 is a sectional view taken along line a 4-4 of Figure 3 showingthe resiliently suspended 35 base of the bag holder.

The embodiment of the invention shown in the drawings consists of asupporting base or platform ill on which is supported the-housing llhaving a front and rear walls 12 and [3, respec- 4o tively, providing anenclosure for the mechanism for actuating the bag holder. closure llprovides asupport for the casing [4 to the upper end of which is securedthe circular housing I5 for the impeller l6 secured to shaft 45 I1journalled by easing l4. Flaring upwardly and outwardly from housing I5is a hopper it which delivers the material such as cement to theimpeller. Rotation of the impeller feeds the material to a dischargespout l9 connecting tangen- 50 tially with housing IS. The impellershaft H has suitably keyed thereto a gear having mesh:

ing engagement with gear 2| on,a horizontal.

shaft 22 extending through casing 14 and operatively connecting with theelectric motor 23 56 which rotates the shaft and through the mesh- Theening gears the impeller 1-6 to feed the materials from the hopper Ill.The above feeding mechanism for finely divided materials has beenparticularly designed for association with the weighingapparatusdisclosed in applicants copending 5 application Serial No. 753,495,filed November 17, 1934, to which reference is made for a more completedisclosure of the driving means" for the feeding impeller.

The invention concerns bag handling mecha- 1o nism including a bagholder designated in its entirety by 25 and consisting of a rear platemem-v ber 25 having formed integral therewith the vertical side platemembers 21 which form a U- shaped holder when viewed in plan as inFigure 3, the rear plate 26, and therefore the holder, being suitablysecured as at 28 to the projecting end of shaft 30. The shaft isjournalled by the inwardly directed bearings 3| and 32 on the front andrear Walls of the housing I I, the shaft there- 20 3 fore extendingthrough the housing and projecting from the rear wall thereof as shownin Fig,- ure 1. In order to exclude dust and dirt from bearing 32 and toprotect the rearwardly projecting end of shaft the same is suitablyenclosed 25 by the tubing 33. The base member or bottom 34 of the bagholder is accommodated by means of the outwardly directed portions 35formed on the side plate members 21 for receiving the same. Elongatedbolts 36 support the base from 30 the side members which is yieldinglysuspended therefrom as each bolt receives a coil spring 37 confinedbetween the horizontal section of portion 35 and the nuts 38 threaded tothe upper end of' each bolt. I

The empty cement bag or other container is located on base 34 of the bagholder and is confined between theside plate members 21 whichar'spacedapart a distance to just receive the bag. Along with this operation thedischarge 0 spout I9 is inserted within an opening in the upper end ofthe bag so that the material discharged therefrom will be delivered tothe bag. To relieve the. operator from the necessity of holding the bagin position on the holder the invention contemplates a locking member 40secured to lever 4| which is pivoted'to the hopper l8 at 42. The arm canbe actuated manually or automatically through the air cylinder 43 to'release orapply member 40 to the discharge spout 60' I9 which therefore.functions to hold the bag to the spout. i During the filling operationit is necessary to 'settle the material delivered to the bag, which isaccomplished in the presentinstance by the yieldingly 'mounted base 34'of the bag holder.

The base member and the bag supported thereby are continually vibratedby the electric motor 44 secured to the undersideof the base and whichrotates the disc 45 non-rotatably secured to the rotor shaft of themotor; Disc '45 is either eccentrically mounted on the rotor shaft or isnonuniform with respect to weight distribution so that its rotation athigh speed will cause the ieldingl su po ted base member to vibrate. In

, this manner the material delivered to the bag is agitated and causedto settle so that at the completion of the filling operation thematerial in the bag is in a compacted condition; It is understood thatother means for vibrating the bag can be used.

Suitably secured on the upper surface of enclosure I l is an aircylinder 46 having a piston 4'! connecting with the piston rod 48extending within the enclosure II and providing a rack bar 50.- The'barmeshes withteeth 5| formed on shaft 30 and exten g for a considerableportion of the length of said shaft in order to accommodate axialmovement of said shaft.

A second air cylinder 52 is located on enclosure l l adjacent cylinder45 for reciprocating the connection 53 including the turnbuckle 54 andwhich pivotally joins at its lower end with arm 55. The shaft 56iournalled'in supports 51 has the arm 55 fixedly secured thereto andalso lever 58 provided with an elongated slot at the-outer end thereoffor receiving the stud 6| projecting from the collar 59 rotatablymounted on shaft 30 but which is held to prevent longitudinal movementof the same on the, shaft. This operatively connects the shaft with thelever 58 and axial movement can be imparted to the shaft by pivotalmovement of the lever, although rotation of the shaft is not interferedwith.

.At the end of the bag filling operation air is admitted to the cylinder52 to cause downward movement of connection 53 and. rotation of shaft 56and lever 58 in a counter-clockwise direction.

As the'lever operatively connects with shaft 50 the same is reciprocatedto the left, thereby locating the bag holder 25 outwardly of theposition it assumes during the bag filling operation. This movement ofthe bag holder is necessary to release the bag from the discharge spoutIS, the

locking member 40 having been; first released to free the bag withrespect to the discharge spout. With the bag holder located in its'outermost position piston 4'! of air cylinder 46 is then actuated tomove rack 50 downwardly; Asithe rack meshes with teeth 5| on shaft 30the shaft is rotated. The rotation of the shaft and therefore the bagholder is clockwise as shown in Figure 2, and simultaneously with thisrotation cylinder 52 is exhausted of its air to cause return of 00 Ilever 58 to its initial position and therefore return of the bag holderto its innermost position. It

will be understood that the holder is simultane ously rotated in aclockwise direction andis drawn inwardly sothat at the end of theseopera-- tions the bag holder will have been aligned with the deliveryslide 62 and will have been rotated to cause the bag to slide from thebag holder and onto the delivery slide, whereupon the same is eventuallydischarged upon an endless conveyor belt. The slide is secured inadjusted position on shaft 63 which is in turn supported from bracket64. 1

Discharge of the filled bag from the bag holder when completed will bymeans of suitable elec- 76 tric contacts deenergize a solenoid valvegtoexhaust the air from cylinder 46, permitting the spring 49 to return thepiston to its uppermost position, the upward movement of the rack bar 50rotating shaft 30 and righting thebag holder.

At the completion of this operation the bag holder 5 assumes its initialposition and is ready'to receive an empty bag, whereupon the operationsof filling the same and discharging are repeated.

The impeller I5 is rotated continuously by the driving motor, it beingunderstood that a prede- 1o termined quantity of material is deliveredto the same at one time sufiicient to neatly fill a bag or container.Prior to the filling operation the operator either manually. orautomatically through air cylinder 43 actuates lever 4| and 15 locks thebag to the discharge spout [9. At the beginning of the filling operationthe motor 44 is started to rotate, the vibrator 45 agitating the j basemember 34 of the bag holder and also the bag supported thereon. Sincethe base member is 20 resiliently supported from the bag holder it isreadily agitated and as'the filling operation proceeds the materialwithin the bag is caused to settle so that the bag when completelyfilled will contain the proper weight of material. 25

. The invention is not to be limited to or by details of construction ofthe particular embodiment thereof illustrated by the drawings, asvarious other forms of the device will of course be apparent to thoseskilled in the artwithout deso parting fromthe spirit of the inventionor the scope of the claims.

What is claimed is:

1. The combination with feeding means for finely divided material, of aholder for yieldingly as supporting a bag or container to be filled withsaid material, a shaft supporting said holder,- means mounting the shaftfor horizontal reciprocating movement and for rotation, and means forreciprocating said shaft and for rotating the 40 same.

said material, a shaft supporting said holder, 45.

means mounting the shaft for horizontal reciprocating movement and forrotation, an oscillat ing lever operatively connecting with the shaftfor reciprocating the same, and means including a rack bar for rotatingthe shaft. 50 3. The combination with feeding means for finely dividedmaterial, of a holder for yieldingly supporting a bag or container to befilled with said material, a shaft supporting said holder, meansmounting the shaft for horizontal recip- 5 rocating movement and forrotation, an oscillating lever operatively connecting with the shaft forreciprocating the same, means including a rack bar for rotating theshaft,-and other means said material, afshaft supporting said holder, 85

means mounting the shaft for horizontal reciproeating movement and forrotation, an oscillating lever operatively connecting with the shaft forreciprocating the same, means including a rack barfor rotating theshaft, and independent means 70 'for oscillating the lever and foractuating said rack bar.

5. Bag filling and handling mechanism comprising feeding means having adischarge spout,

locking means for holding a bag on the spout with the spoutlocated-within the bag, a holder below the spout for supporting the bagto be filled with said material, a shaft for supporting the holder,means mounting the shaft for hori zontal reciprocating movement and forrotation, whereby the bag is removed from said spout by reciprocation ofthe holder and is discharged therefrom by rotation of the holder.

6. Bag filling and handling mechanism comprising feeding means having adischarge spout,

locking means for holding a bag on the spout with the spout locatedwithin the bag, a holder below the spout for supporting the bag to befilled with said material, a shaft for supporting the holder, meansmounting the shaft for horizontal reciprocating movement and forrotation, an oscillating lever operatively connecting with the shaft forreciprocating the holder to release the bag from said discharge spout,and means including'a' rack bar for rotating the shaft to cause theholder to discharge the released bag.

.7.-Bag filling and handling mechanism comprising feeding means having adischarge spout, a holder located below said spout for supporting a bagto be filled with said material, said holder including a base memberyieldingly supported therefrom, vibrating means carried by said basemember for agitating the same and the bag supported thereon, a shaftsupporting the holder, 5 and means for horizontally reciprocating saidshaft and for rotating the shaft, said operations taking place insequence.

8. Bag filling and handling mechanism'comprising feeding means having adischarge t, m a holder located below said spout for supporting a bag tobe filled with said material, said holder) being substantially U-shapedin plan view for holding the bag upright and including a base memberyieldingly supported therefrom, a motor 15 carried by the underside ofsaid base member and having a disc fixed to the rotor shaft thereof, 7said disc having its mass eccentrically distributed with respect to theshaft, whereby said base member is vibrated when the shaft is rotated athigh 90 speed, means supporting the holder, and independent means forhorizontally reciprocating and for rotating said supporting means.

ADOLPH G. CARLSON.

